Car-roof.



UNTTED STATES PATENTl oEEioE.

WILLIAM D. THOMPSON, UF DETROIT, MICHIGAN, ASSIGNOR .TD HUTCHINS CAR ROOFINGv COMPANY, 0F IJIE'IROII'I` MICHIGAN, A CORPGRATION' OF MICHIGAN.

CAR-R001?.

Patented Nomea/,1917.

i Application tiled June 16, 191'1, Serial No. 633.589. Renewed November S, 1915. i. Serial No. 60,607.

means for Weathcrprooling the sheets. The

present invention relates to a. construction of Weather proofing means Aand has for its object the avoiding of certain defects in constructions heretofore used.

vFigure l is a sectional perspective view otl a. portion of a. car roof to which my im provement is applied;

Fig. 2 is a section showing a modified con struction;

Fig. 3 is a section showing another modi In the present state of the art, roofs of the type above referred to have been con Yconstruction the sheets or plates are free `to move independently of each other and of the carlines and caps, While the caps which are secured to the roof frame at the ridge and eaves are designed to prevent penetra- IIS tion of the Water through the roof. It has been found however, that in a. hard rain storm accompanied by al strong wind, the water which covers the "joint between the cap tianges and the rooting sheets will be blown into the crcvices and at. times may even be thrown over the upstanding flange of the roofing sheet and into the ear. This is due to the fact that it is diiiicult or impossibleto keep the foot flanges of the cap in close contact with the roofing plates at all points in the roof, and if theconditions .are such as to expose an opening at a point where 'the wind can blow the water there;

through the objectionable results above specified will occur.

Myrimproved construction avoids the defect by arranging the joint between the cap or Weather sealing flange and the rooting sheet at a. point above the plane of the sheet and here it will not be covered by the ivater collecting thereon. Thus as shown, A is one of the carlines and .B e' purlin of the roof frame and (lare the roofing sheets or plates extending between carlines and sup ported on the perline, .said sheets being provided with the upstanding edge flanges I). E is the cap embracing the carlines., and

4the fianges ifi-and F are foot flanges on the cap designed to bear against the sheets. Instead however, of resting the flanges F upon portions of the sheet C in the general plane of the roof, I form said sheets with raised bearing portions G beneath the flanges F. This wil lift the line of the joint sufficiently above the plane of the sheet so that under no conditain will the water collecting on the sheet rise to submerge the joint.

In Fig. 2 a,`constri1ction is illustrated in which the adjacent sheets C `are provided with engaging bent flanges H and I for 'forming the Weather. proofing joint, the

outer flange being provided with a laterally projecting foot. portion J, This foot portion rests 1.ipon raised bearing (i upon the opposite sheet similar in construction to that shown in Fig. 1 and which performs .the sa me function.

In Fig. 3 a. construction is shown in which the raised portion G is supported by a filier stripv K which may be arranged above the lower flanges ofthe ca rlines and forms a bearing onv which the portion G is free to ride.

What I claim as my invention is: I

1. In a car roof, tlieeombination wlth a.

cap having laterally extending flanges,0f a

roofing sheet having .its edge embraced by said cap, said roofing sheet having a portion above and parallel to .the remainder of the` roofing sheet engaging said flanges.

In a ear roof, the combination with a. reong sheet having an lip-standing edge :and an adjacent portion above and parallel to the main body of the sheet, of a cap embracing said 11p-standing fiange and having a laterally extending flange engaging the adjacent raised portion of the roofing sheet.

3. ln a car roof, the combination of a roofing plate or sheet having a marginal portion raised slightly above and substantially parallel to the plane of the sheet, and

`a'- relatively movable Weather-proofing mem- 'ber having a laterally-extending flange, the outer edge of which is exposed to the -weather and contacts'with and is movable tially parallel' to the plane of the sheet to form a shoulder or brake between saidnportion andthe body of the sheet and a relatively-movable Weather-prooiing member having its exposed edge contacting with said raised portion adjacent to said shoulder or brake.

5. In a car roof, the combination of a roong plate or sheet having a marginal portion raised slightly above and substantially parallel to the plane of said sheet and forming a transversely-extending shoulder therebetween, an opstanding fla-nge at the edge of said raised portion, and a relatively movable weather-proofing member embracing said upstanding flange and having a laterally-extending liange, the edge portion of which bears upon and is movable over said raised portion.

6. A seam construction for a car-roof having movable roof sheets, said seam constructioncomprising a seam cover of inverted channel shape provided with outwardly projecting flanges along the lower edges of its side walls, in combination with the side margins of the roof sheets, said side margins being raised to a height above the sup porting substructure and .provided withedge anges projecting up within, said seam covers and spaced from the side walls thereof, the adjacent raised mar 'ns contactingv flatwise with the under sur ace of the outwardly projecting flanges of the seam covers, whereby a tight sliding joint is maintained between said seam covers and roof sheets above the general level of the main drainage portion of said sheets.

7. A car roof comprising metal roof sheets arranged side by side with a clear space between them, safid root'- sheets having ftheir side margins raised above the plane of support of the roof sheets and clear of the supporting substructure, seam covers bridging the spaces between said roof sheets and having lateral flanges restin flatwise on said raised margins, said latera fianges terminating short of the junctions of the raised margins and theroof sheets, whereby a tight joint is maintained between said seam covers and roof sheets above the general level of the main `drainage portion of'saidfroof sheets.

'8. A car roof com rising a substructure, roof sheets arrange' transversely on said substructure and movably supported there' on, said sheets being spaced apart at their sides, the side marginal portions of said. A

sheets being raised above the general dra-ina'ge level of Said sheets and having upstanding iianges at the edgesthereof. and seam caps of inverted channel-shape bridging f.

said opstanding flanges 'of the roof sheets and themselves having marginal fiar-xges that bear iiatwise against the raised marginal portions of the roof sheets.

In testimony whereof I aix my signature in presence of two witnesses.

WILLIAM D. THOMPSON. 

